CN1186794A - Formula of pressure formed ammonium nitrate explosive and its production method - Google Patents
Formula of pressure formed ammonium nitrate explosive and its production method Download PDFInfo
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- CN1186794A CN1186794A CN96118482A CN96118482A CN1186794A CN 1186794 A CN1186794 A CN 1186794A CN 96118482 A CN96118482 A CN 96118482A CN 96118482 A CN96118482 A CN 96118482A CN 1186794 A CN1186794 A CN 1186794A
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- explosive
- ammonium nitrate
- stearate
- amine
- reducing agent
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B31/00—Compositions containing an inorganic nitrogen-oxygen salt
- C06B31/28—Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate
- C06B31/285—Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate with fuel oil, e.g. ANFO-compositions
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- Chemical Kinetics & Catalysis (AREA)
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- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
The present invention provides a formula of pressure-formed ammonium nitrate explosive consisting of ammonium nitrate, compound reducing agent fuel substance and stabilizing agent and its preparation method. The explosive is characterized in that the explosive formula does not contain any bulking agent, the explosive is pressed into a certain shape by adopting a press-fitting mode, and a layer of strong hydrophobic polymer film is coated on the surface of a explosive body by adopting a spraying or melt-soaking mode. Compared with the traditional powdery ammonium nitrate fuel oil explosive, the prepared explosive product has high density (1.2-1.5 g-cm)－3) High detonation velocity (3600-6500 m.s)－1) The method has the advantages of strong water resistance, high production efficiency, good safety, low price and the like, is suitable for production of various explosive factories, and can meet the requirements of various mines and engineering blasting operations.
Description
The invention belongs to high-power ammoniumnitrate explosives prescription and manufacture method thereof in the industrial explosive.
It is the explosive of major ingredient that ammoniumnitrate explosives means with ammonium nitrate, comprises ammonium oil type, rock type and Permitted Detonator for Coal Mining, is the main civil explosive kind of producing and using both at home and abroad.Such explosive is prepared into Powdered usually, is packaged into small diameter cylinders type medicinal strip with paraffin paper shell or double-deck kraft paper waxdip, and charge density is 0.9～1.05 gram per centimeter
3, there are problems such as easy moisture absorption caking, sclerosis, poor stability, not anti-water, detonation sensitivity be low in it, makes 18 of minor diameter medicinal strip
#Detonator can not detonate, and has reliable Sensitivity to Primary Explosion for guaranteeing it, also contains 4～8% raising agents such as wood powder, thereby the charge process difficulty is improved, and explosive density is very low, and 0.80～1.05gcm is only arranged
-3, explosion velocity also has only 2500～3500ms
-1But, in mineral prospecting, mining and engineering explosion operation, needing water resisting high-density, detonating explosive at present, its reason is;
1. in blasting hole with water, require the not only anti-water of explosive, and density should be at 1.05gcm
-3More than, promptly be higher than the proportion that mixes pulp-water, so that explosive can sink at the bottom of the hole.
2. to reduce the drilling and blasting cost, just need to improve blasting output per meter hole, i.e. expanded hole network parameters, many powder charges of punching less just improve explosive density to strengthen the bulk strength of explosive.
3. in engineerings such as petroleum prospecting and mine blasting, need high-density, detonating explosive to make hypocentrum cartridge and detonating material (detonation tool, priming bomb, igniting primer), and present employed high explosive RDX, TNT etc. or its mixture are not only with high costs, and complex process, and safety problem is arranged.
The objective of the invention is to produce the ammoniumnitrate explosives of the extrusion forming of cheapness, anti-water, high-density, high explosion velocity by improving the effective technical way of explosive raw material prescription and processing condition.
For achieving the above object, the present invention adopts mechanical mill blended mode that the stablizer of 50～98% ammonium nitrate, 5～60% complex reducing agent fuel-based materials and 0.05～3.0% is disperseed equably aspect technical recipe, the ammonium nitrate that makes main ingredient in the mechanical mill process by industrial auxiliary agent function of stabilizer, physicochemical property such as its crystalline structure, condition of surface, degree of activation change, and make the powder ammonium nitrate explosive of detonation sensitivity height, particle surface oleophilic drainage; Special pressuring method powder charge globulate or the cylindrical medicine body of adopting on the pharmaceutical technology step, spraying or the molten explosive product innovation that makes the medicine surface form the strong hydrophobic macromolecule membrane of one deck that soaks then.
Prescription of the present invention, processing step and starting material division are as follows:
One, prescription (weight percent)
Ammonium nitrate 50～98%
Complex reducing agent fuel-based material 5～60%
Stablizer 0.05～3.0%
Two, processing step
1. milled processed oxygenant ammonium nitrate, dispersion stabilizer and part complex reducing agent fuel-based material can carry out in wheel roller, can also adopt other to meet the high-efficient grinding treatment facility that production safety requires.Fig. 1 in its technological process such as the Figure of description.
2. it is cold mixed to lower the temperature, and disperses part complex reducing agent fuel-based material such as TNT powder, can carry out in wheel roller, can also adopt other to meet the efficient dispersing and mixing treatment facility that production safety requires.Fig. 2 in its technological process such as the Figure of description.
3. adopt hydraulic universal material testing machine or common pressuring method, at pressure is 1～500Pa, the material temperature is under-30 °～50 ℃ the condition, cold batch mixing packed into be pressed into certain shape (being generally spherical or cylindrical) in the mould, adopt spraying or infiltration mode to coat the strong hydrophobic macromolecule membrane of last layer then in moulding medicine surface, promptly make product.
Three, starting material
1. ammonium nitrate: industrial goods, it is standby to adopt mechanical means to be broken into certain lumpiness.
2. stablizer: the stearate of basic metal, alkaline-earth metal and some heavy metals such as octadecane amine, stearic amide, mountain Yu acid primary amine, mountain Yu acid magnesium, mountain Yu acid zinc, clorafin, zinc sulfate ammonium, stearic acid, sodium stearate, Magnesium Stearate, Zinic stearas, calcium stearate, iron stearate, barium stearate, lead stearate.
3. complex reducing agent fuel-based material: paraffin, Microcrystalline Wax, polyethylene wax, TNT powder, wherein the TNT powder is industrial goods, more than 90% by 60 eye mesh screens.
Prescription of the present invention does not contain any raising agent, and adopt press-fit approach that explosive is pressed into certain shape, and adopt spraying or infiltration mode to coat the strong hydrophobic macromolecule membrane of one deck in the medicine surface, made explosive product is compared with traditional powdery an-tnt-oil explosive product, has the following advantages:
1. the medicine volume density is big, can reach 1.20～1.50gcm
-3, the medicine volume density of powder ammonium nitrate explosive only is 0.80～1.05gcm usually
-3
2. blast performance index height, explosion velocity reaches 3600～6500ms
-1, capacity for work reaches 3200～370ml, and brisance reaches 14～26mm, and traditional powdery an-tnt-oil explosive, its fried speed only is 2500～2500ms
-1, capacity for work is 300～330ml only, brisance has only 10～14mm.
3. water resisting property is strong.By adding stablizer, will be that the reductive agent of thing is coated on ammonium nitrate powder surface based on wax, the while, hydrophobic macromolecule membrane closely was coated on the medicine external surface, thereby explosive product has secular moistureproof water repelling property.After scratching film with the medicine body 1 meter dark underwater soaking 48 hours, the blast performance of explosive is constant.
4. save the packaging process of volume paraffin paper shell, have the powder charge of easily being automated, production efficiency height, advantage that security is good.
5. detonating material (detonation tool, priming bomb, igniting primer), the hypocentrum cartridge big with containing high explosive RDX, TNT amount are compared, cost is very cheap, and safe in process is easy, can replace the explosive of above-mentioned two class costlinesses and is used for engineerings such as petroleum prospecting and blasting operation.
6. excellent storage stability, storage period, the explosive property index was undamped greater than 6 months.
Implementing 1～6 is undertaken by following processing step:
1. milled processed ammonium nitrate, dispersion stabilizer and part complex reducing agent fuel-based material carry out the Fig. 3 in technological process such as the Figure of description in wheel roller.
2. it is cold mixed to lower the temperature, and disperses part complex reducing agent fuel-based material such as TNT powder, carries out the Fig. 4 in technological process such as the Figure of description in wheel roller.
3. adopt WE-30 type hydraulic universal material testing machine or pressuring method commonly used that medicinal powder is pressed into the exposed powder column of φ 40mm, its moulding pressure is 1～500Pa, the material temperature is-30 °～50 ℃, the powder column of making is placed in the solution of being made up of the paraffin of 25% polyethylene, 25% polyacrylate and 50% (about 140 ℃ of liquid temperature) and soaks about 1 second, take out immediately, the solution film nature condensation that sticks to grain surface is shunk, coat into about the thick hydrophobic membrane of 0.2mm at the powder column outside surface, promptly make product.
Adopt above-mentioned step of preparation process to make pressure formed nitro-amine explosive sample of the present invention by the listed Example formulations of table 1.TNT in the Comparative Examples 6 is industrial goods, and ball milling passes through 60 mesh sieves more than 90%.The technical performance index of Huo Deing is listed in table 2 after tested.
Table 1
Table 2
Claims (4)
1. pressure formed nitro-amine explosive of being made up of ammonium nitrate, complex reducing agent fuel-based material and stablizer is characterized in that the prescription of this explosive is (weight percent):
Ammonium nitrate: 50～98%
Complex reducing agent fuel-based material: 5～60%
Stablizer: 0.05～3.0%
2. the prescription of pressure formed nitro-amine explosive according to claim 1 is characterized in that complex reducing agent fuel-based material is paraffin, Microcrystalline Wax, polyethylene wax, TNT powder.
3. the prescription of pressure formed nitro-amine explosive according to claim 1 is characterized in that the ammonium nitrate stablizer is meant the stearate of basic metal, alkaline-earth metal and some heavy metals such as octadecane amine, stearic amide, mountain Yu acid primary amine, mountain Yu acid magnesium, mountain Yu acid zinc, clorafin, zinc sulfate ammonium, stearic acid, sodium stearate, Magnesium Stearate, Zinic stearas, calcium stearate, iron stearate, barium stearate, lead stearate.
4. the manufacture method of the ammonium nitrate dynamite of a kind of extrusion forming according to claim 1, it is characterized in that: is 1～500Pa with the above-mentioned explosive powder that grinds the system of mixing at pressure, the material temperature is-30 °～50 ℃, with hydraulic universal material testing machine or usually pressuring method pack into and be pressed into spherical or cylindrical medicine body in the mould, coat the strong hydrophobic macromolecule membrane of last layer in spraying of moulding medicine surface or infiltration mode then, promptly make explosive product of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96118482A CN1186794A (en) | 1996-12-24 | 1996-12-24 | Formula of pressure formed ammonium nitrate explosive and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96118482A CN1186794A (en) | 1996-12-24 | 1996-12-24 | Formula of pressure formed ammonium nitrate explosive and its production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1186794A true CN1186794A (en) | 1998-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96118482A Pending CN1186794A (en) | 1996-12-24 | 1996-12-24 | Formula of pressure formed ammonium nitrate explosive and its production method |
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| CN (1) | CN1186794A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864544A (en) * | 2012-12-12 | 2014-06-18 | 南京理工大学 | High-fluidity mixed explosive used for detonator, and its preparation method |
| CN105481619A (en) * | 2014-09-15 | 2016-04-13 | 长沙银芒化工科技有限公司 | Combination-membrane-coated granulous ammonium-nitrate-fuel-oil explosive mixture and manufacture method thereof |
-
1996
- 1996-12-24 CN CN96118482A patent/CN1186794A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864544A (en) * | 2012-12-12 | 2014-06-18 | 南京理工大学 | High-fluidity mixed explosive used for detonator, and its preparation method |
| CN103864544B (en) * | 2012-12-12 | 2016-07-06 | 南京理工大学 | A kind of high free-running property composite explosives for detonator and preparation method thereof |
| CN105481619A (en) * | 2014-09-15 | 2016-04-13 | 长沙银芒化工科技有限公司 | Combination-membrane-coated granulous ammonium-nitrate-fuel-oil explosive mixture and manufacture method thereof |
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